696 entries under adjective topic. ×

7
out to lunch(expression, idiom, wild, strange)
7
smitten(love, keen, passionate, obsessed)
7
thoughtless(silly, unwise, wacky)
7
unsound(wrong, silly, foolish, stupid)
7
wrong(foolish, unreasonable, sane, illogical)
6
ardent(love, concern, keen, passionate)
6
buggy(slang, silly, foolish, mad)
6
bughouse
6
extravagant(rough, offensive, strange, foolish)
6
far-out(unusual, strange, absurd, unique)
6
freak(noun, person, beat, character)
6
half-witted(weak, simple, silly, foolish)
6
incongruous(silly, stupid, insignificant, unreasonable)
6
off(sane, nonconforming)
6
off one's rocker(expression, idiom, sane)
6
pointless(simple, silly, foolish, stupid)
6
singular(bad, cool, extraordinary, unusual)
6
tomfool(knowledge, ability, informal, foolish)
6
twisted(mad, odd, insane)
5
capricious(characteristic, person, extraordinary, unusual)
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APASmart Define. (2016). crazy thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/crazy/thesaurus/synonyms
ChicagoSmart Define. 2016. "crazy thesaurus" https://smartdefine.org/crazy/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, crazy thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/crazy/thesaurus/synonyms>.
MLASmart Define. "crazy thesaurus" 3 April 2016. Web. 24 September 2026. <https://smartdefine.org/crazy/thesaurus/synonyms>